Laser Attack Resets Tangem Wallet Passwords on Cards That Can’t Be Patched

Jul 10, 2026

Researchers at Ledger’s Donjon security team have shown that a precisely timed laser pulse, aimed at the chip inside a Tangem crypto wallet card, can reset the card’s password to anything the attacker picks.

No old password. No backup card. Once it is reset, whoever did it controls the wallet and can move the coins out.

This is not an emergency for most owners. The attack needs

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